Michael Stohl, and Prof. George A. Lopez, "After the failure to prevent Allende from taking office, efforts shifted to obtaining his removal. At least $7 million was authorized by the United States for CIA use in the destabilizing of Chilean society. This included financing and assisting opposition groups and right-wing paramilitary groups such as Patria y Libertad ('Fatherland and Liberty')". Although PyL was already dissolved, some of their former integrants continued collaborating with Pinochet's regime. Former head of DINA Manuel Contreras declared to Chilean justice in 2005 that the CNI, successor of DINA, handed out monthly payments between 1978 and 1990 to the persons who had worked with DINA agent Michael Townley in Chile, former members of PyL: Mariana Callejas (Townley's wife), Francisco Oyarzún, Gustavo Etchepare and Eugenio Berríos. Assassinated in 1995, Berrios, who worked as a chemist for the DINA in Colonia Dignidad, also worked with drug traffickers and DEA agents. Michael Townley has been convicted for the 1976 assassination of former Chilean minister Orlando Letelier, and was involved in the 1974 assassination of General Carlos Prats in Buenos Aires. Clandestine activities June 1973 sabotage plan The Chilean Navy's June 1973 plan included sabotaging bridges, oil pipelines, energy towers and the fuel supply. The plan was revealed after the transition to democracy by Roberto Theime, leader of military operations for Fatherland and Liberty. Thieme exiled himself to Argentina after the failed Tanquetazo, but returned to Chile in mid-July 1973, two months before the military coup. Thieme also revealed that in 1973, he was pressured by the military to assassinate Senator Carlos Altamirano, who had been the general secretary of the Chilean Socialist Party since 1971. Olof Palme assassination The Swedish journalist Anders Leopold, in his 2008 book Det svenska trädet skall fällas, makes the case that PyL leader Roberto Thieme was the assassin in the still-unsolved 1986 murder of Swedish prime minister Olof Palme. According to Leopold, the Swedish prime minister was killed because he had freely given asylum to so many leftist Chileans following the 1973 coup against Salvador Allende. 2004 declarations Roberto Thieme, leader of the military operations of PyL, signed on 2 December 2004, along with other leaders José Agustín Vásquez and Arturo Hoffmann, a declaration which referred to the Valech Report and begged pardon for their responsibilities in the repression against civilians operated by Pinochet's junta. They indicated that many members of the group had